WO2018212369A1

WO2018212369A1 - Virtual exhibition space system utilizing 2.5-dimensional image and method for providing same

Info

Publication number: WO2018212369A1
Application number: PCT/KR2017/005086
Authority: WO
Inventors: 김동리; 박치형; 윤수현; 조인제
Original assignee: 디프트 주식회사
Priority date: 2017-05-17
Filing date: 2017-05-17
Publication date: 2018-11-22
Also published as: US11651545B2; KR101956098B1; KR20180126146A; US11069126B2; US20200082604A1; US20210312700A1

Abstract

A virtual exhibition space system utilizing a 2.5-dimensional image and a method for providing same are provided. In the system, a perspective projection having a predetermined viewpoint and a predetermined number of vanishing points is formed with respect to a predetermined virtual exhibition space comprising a plurality of wall surfaces, virtual three-dimensional coordinates in a predetermined location on the plurality of wall surfaces in the perspective projection are calculated on the basis of the vanishing points of the perspective projection, on the basis of the virtual three-dimensional coordinates, a predetermined two-dimensional content image is rotated or resized and positioned on at least one wall surface among the plurality of wall surfaces in the perspective projection, and a virtual exhibition space image is produced by means of the perspective projection on which the content image is positioned.

Description

Virtual exhibition space system and method using 2.5D image

The present invention relates to a virtual exhibition space, and more particularly, to a virtual exhibition space system and a method using the 2.5-dimensional image.

Recently, with the development of information and communication technology, a virtual gallery service has been provided. For example, one virtual gallery service provides a flat service for arranging exhibition contents on a two-dimensional wall image, and another virtual gallery service constructs and services three-dimensional graphics of a virtual gallery using a three-dimensional engine. In addition, another virtual gallery service configures a virtual reality gallery space using VR technology, and provides a service to experience content displayed in the virtual reality gallery space using a VR device.

Conventional flat gallery service has a disadvantage that can not provide a three-dimensional gallery service, the gallery service using a three-dimensional engine or VR technology takes a lot of time to load, as the size and number of data is significant, Corruption will be involved. High performance is also required for the user terminal for using the gallery service.

The problem to be solved by the present invention is to provide a virtual exhibition space system and a method using the 2.5-dimensional image.

Problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

The virtual exhibition space system using the 2.5-dimensional image according to an aspect of the present invention for solving the above problems, a virtual exhibition space generation unit for generating a virtual exhibition space image, and receives a virtual exhibition space image request from the user terminal And a server including a communication unit configured to provide the virtual exhibition space image to the user terminal, wherein the virtual exhibition space generation unit includes a predetermined viewpoint and a predetermined number of predetermined virtual exhibition spaces including a plurality of wall surfaces. Construct a perspective view having a vanishing point of, calculate virtual three-dimensional coordinates of a predetermined position on the plurality of wall surfaces within the perspective view based on the vanishing point of the perspective view, and calculate two-dimensional based on the virtual three-dimensional coordinates. Rotate or resize a predetermined content image to display at least one of the plurality of wall surfaces in the perspective view. The virtual exhibition space image is completed using the perspective view in which the content image is disposed on one wall surface.

In some embodiments of the present disclosure, the communication unit receives information about the viewpoint change of the user from the user terminal, the virtual exhibition space generation unit reproduces the virtual exhibition space image based on the information about the viewpoint change, Regenerating the virtual exhibition space image based on the information about the viewpoint change includes reconstructing the perspective view according to the changed viewpoint with respect to the virtual exhibition space.

In some embodiments of the present invention, the virtual exhibition space generation unit further completes the virtual exhibition space image by using a plurality of shadow layers having different transparency and a predetermined number of illumination layers, The range of shadow values is determined according to the intensity and position, and the number or arrangement structure of the shadow layers is determined according to the range of the shadow values.

According to another aspect of the present invention, there is provided a virtual exhibition space system utilizing a 2.5-dimensional image, which is a computer-implemented method, comprising: receiving a virtual exhibition space image request from a user, and a virtual exhibition space Generating and providing an image, wherein generating and providing an image of the virtual exhibition space includes a perspective view having a predetermined viewpoint and a predetermined number of vanishing points with respect to the predetermined virtual exhibition space including a plurality of walls. Configuring, calculating virtual three-dimensional coordinates of a predetermined position on the plurality of wall surfaces within the perspective view based on the vanishing point of the perspective view, and two-dimensional predetermined ones based on the virtual three-dimensional coordinates. Rotate or resize a content image onto at least one of the plurality of wall surfaces in the perspective view. And a value and phase, the method comprising: completing the virtual display space image using the perspective view of the content images are arranged to.

In some embodiments of the invention, the method further comprises loading a still shot of the virtual exhibition space image received from a server, and generating and providing the virtual exhibition space image comprises: Receiving the content image from the server during the loading of the still shot of and providing a still shot of the virtual exhibition space image by replacing the completed virtual exhibition space image.

In some embodiments of the present invention, the method further comprises obtaining information regarding the viewpoint change of the user, and regenerating the virtual exhibition space image based on the information about the viewpoint change. Regenerating the virtual exhibition space image based on the information about the viewpoint change includes reconstructing the perspective view according to the changed viewpoint with respect to the virtual exhibition space.

In some embodiments of the present disclosure, the generating of the virtual exhibition space image may further include completing the virtual exhibition space image by using a plurality of shadow layers having a different transparency and a predetermined number of illumination layers. The range of shadow values is determined according to the light intensity and position of the layer, and the number or arrangement of the shadow layers is determined according to the range of the shadow values.

Other specific details of the invention are included in the detailed description and drawings.

According to the present invention described above, it is possible to provide a three-dimensional virtual exhibition space service different from the conventional flat gallery service by using a 2.5-dimensional image based on cognitive illusion.

In addition, according to the present invention described above, in order to provide a three-dimensional virtual exhibition space service, since the three-dimensional physics engine is not used, it is possible to quickly configure a three-dimensional virtual exhibition space, it is possible to minimize the damage of the content.

In addition, according to the present invention described above, in order to provide a three-dimensional virtual exhibition space service, since a still shot type image is preferentially used, data transmission efficiency and data usage can be reduced.

In addition, according to the present invention described above, by using a multi-layer shadow layer and an illumination layer, it is possible to configure a more detailed and realistic three-dimensional virtual exhibition space.

Effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 is a block diagram schematically illustrating a configuration of a virtual exhibition space system using a 2.5-dimensional image according to an embodiment of the present invention.

FIG. 2 is a block diagram schematically illustrating a detailed configuration of the server of FIG. 1.

3 is a diagram conceptually illustrating a perspective view as a 2.5-dimensional image using cognitive optical illusion.

4 is a diagram conceptually illustrating a deformation of a perspective view according to a user's viewpoint.

5 is a diagram schematically illustrating data transmission efficiency between a server and a user terminal.

6 is a diagram conceptually illustrating a digital drawing technique using a multilayer layer.

7 and 8 are schematic diagrams of exemplary virtual exhibition space images.

9 is a flowchart schematically illustrating a configuration of a method for providing a virtual exhibition space using a 2.5D image according to an exemplary embodiment of the present invention.

FIG. 10 is a flowchart schematically illustrating a detailed configuration of a virtual exhibition space image generation step of FIG. 9.

Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but can be embodied in various different forms, and the present embodiments only make the disclosure of the present invention complete, and those of ordinary skill in the art to which the present invention belongs. It is provided to fully inform the skilled worker of the scope of the invention, which is defined only by the scope of the claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, "comprises" and / or "comprising" does not exclude the presence or addition of one or more other components in addition to the mentioned components. Like reference numerals refer to like elements throughout, and "and / or" includes each and all combinations of one or more of the mentioned components. Although "first", "second", etc. are used to describe various components, these components are of course not limited by these terms. These terms are only used to distinguish one component from another. Therefore, of course, the first component mentioned below may be a second component within the technical spirit of the present invention.

Unless otherwise defined, all terms used in the present specification (including technical and scientific terms) may be used in a sense that can be commonly understood by those skilled in the art. In addition, terms that are defined in a commonly used dictionary are not ideally or excessively interpreted unless they are specifically defined clearly.

The spatially relative terms " below ", " beneath ", " lower ", " above ", " upper " It can be used to easily describe a component's correlation with other components. Spatially relative terms are to be understood as including terms in different directions of components in use or operation in addition to the directions shown in the figures. For example, when flipping a component shown in the drawing, a component described as "below" or "beneath" of another component may be placed "above" the other component. Can be. Thus, the exemplary term "below" can encompass both an orientation of above and below. Components may be oriented in other directions as well, so spatially relative terms may be interpreted according to orientation.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As used herein, the term "content image" includes any content that can be expressed as a photograph, a picture, or a portrait or landscape photograph taken by an individual, and other images as a creation by an artist.

Referring to FIG. 1, a virtual exhibition space system using a 2.5D image according to an exemplary embodiment of the present invention includes a server 100 and a user terminal 200.

The server 100 and the user terminal 200 are connected to each other via a network. The server 100 and the user terminal 200 may transmit and receive various data and / or information. The network includes a wired or wireless network. The size, topology, communication method, etc. of the network may be provided in various modifications according to embodiments.

The server 100 provides a virtual exhibition space image to the user terminal 200 in response to a virtual exhibition space image request from the user terminal 200. The virtual exhibition space image is provided as a 2.5-dimensional image. In the present specification, the 2.5-dimensional image represents a two-dimensional image representing a three-dimensional feeling based on cognitive optical illusion. Cognitive optical illusion occurs in the cognitive process according to unconscious inference, and it is an optical illusion that appears because human tends to judge the whole as a whole. Detailed description thereof will be omitted because it may obscure the gist of the present invention.

Referring to FIG. 2, the server 100 includes a communication unit 110, a virtual exhibition space generation unit 120, a user personalization unit 130, a user information management unit 140, and a content image storage unit 150. The communication unit 110, the virtual exhibition space generation unit 120, the user personalization unit 130, the user information management unit 150, and the content image storage unit 150 may transmit and receive various data and / or information.

The communication unit 110 communicates with the user terminal 200. In some embodiments, the communication unit 110 receives a virtual exhibition space image request from the user terminal 200 and provides the virtual exhibition space image to the user terminal 200. In addition, in some embodiments, the communication unit 110 provides a content image to the user terminal 200. In addition, in some embodiments, the communication unit 110 receives the information on the user's viewpoint change from the user terminal 200, and provides the user terminal 200 with the modified virtual exhibition space image.

The virtual exhibition space generation unit 120 generates a virtual exhibition space image. The virtual exhibition space generation unit 120 configures a perspective view having a predetermined viewpoint and a predetermined number of vanishing points with respect to the predetermined virtual exhibition space. The virtual exhibition space may include a plurality of wall surfaces. The structure of the virtual exhibition space may be provided in advance. The virtual exhibition space generation unit 120 may store data regarding the structure of the virtual exhibition space in advance. The virtual exhibition space generation unit 120 calculates virtual three-dimensional coordinates of a predetermined position on a plurality of wall surfaces in the perspective view based on the vanishing point of the perspective view. For example, three-dimensional coordinates of the edge of each wall surface may be calculated, but are not limited thereto. The virtual exhibition space generation unit 120 rotates or resizes a predetermined content image in two dimensions based on the virtual three-dimensional coordinates and arranges it on at least one of the plurality of wall surfaces in the perspective view. The virtual exhibition space generation unit 120 completes the virtual exhibition space image by using the perspective view in which the content image is arranged.

The user personalization unit 130 analyzes the type or category of the preferred content for each user. To this end, the user personalization unit 130 may use the viewing history or feedback history of the user. The user personalization unit 130 may recommend content or exhibition space that the user prefers using the result of analyzing the user's preference information. The recommended content may be reflected in real time in the virtual exhibition space image. Through personalization of the user, the visit rate and purchase rate of the user can be increased.

The user information manager 140 manages user information. For example, the user information may include, but is not limited to, a user account, a password, a user's name, gender, age, region, occupation, profile information such as a user's preference information, and the like.

The content image storage unit 150 stores the content image. Unlike FIG. 2, the content image storage unit 150 may be provided as a separate server.

In some embodiments, the server 100 may further include some components not shown in FIG. 2, or may be modified to not include some components shown in FIG. 2.

User terminal 200 represents a computer system used by a user. For example, the user terminal 200 may be provided as a mobile computer system such as a smartphone, a tablet, a personal digital assistant (PDA). Alternatively, the user terminal 200 may be provided as a fixed computer system such as a notebook or a desktop. The user terminal 200 is not limited to the above-described example, and may be provided to any computer system that can be connected to the server 100 through a network.

In some embodiments, the user terminal 200 receives a virtual exhibition space image from the server 100 and provides it to the user.

Alternatively, in some embodiments, the user terminal 200 receives the data and the content image of the structure of the virtual exhibition space from the server 100 to directly generate the virtual exhibition space image. The user terminal 200 may store data regarding the structure of the virtual exhibition space in advance. The manner in which the user terminal 200 generates the virtual exhibition space image is substantially the same as described above.

Referring to FIG. 3, a three-dimensional three-dimensional effect that a user can feel is conceptually illustrated by a perspective view having one vanishing point.

As described above, the virtual exhibition space represented in the perspective view includes a plurality of wall surfaces 11, 12, 13. The predetermined content image 20 is then rotated or resized and placed on the wall surfaces 11, 12, 13. In addition, the overall shape of the content image 20 may be modified to express a three-dimensional appearance. In FIG. 3, one content image 20 is illustrated as being disposed on one wall 11, but is not limited thereto, and each content image may be disposed on each

wall

11, 12, and 13. Can be. In addition, a plurality of content images may be arranged at a predetermined interval on one wall surface.

Referring to FIG. 4, the appearance of the virtual exhibition space displayed by the user changes according to the user's viewpoint. Therefore, the position of the user's viewpoint and vanishing point 15 in the perspective view with respect to the virtual exhibition space must also be changed.

To this end, the virtual exhibition space generation unit 120 regenerates the virtual exhibition space image based on the information about the viewpoint change provided from the user terminal 200. That is, the virtual exhibition space generation unit 120 reconstructs the perspective view of the virtual exhibition space according to the changed viewpoint of the user. At this time, the content image 20 is also reconstructed together.

For example, the user terminal 200 may estimate a change in a user's viewpoint using a gyroscope and generate information about the change in the user's viewpoint, but is not limited thereto.

In some embodiments, as described above, the server 100 may regenerate the virtual exhibition space image by receiving information about the change of viewpoint of the user from the user terminal 200.

Alternatively, in some embodiments, the user terminal 200 may obtain information about the user's viewpoint change, and reproduce the virtual exhibition space image based on the information.

Referring to FIG. 5, in some embodiments, server 100 creates a still shot (or snapshot) of a virtual exhibit space image. Alternatively, in some embodiments, server 100 stores still shots of virtual exhibition space images generated by other computer systems. For example, the server 100 stores a still shot 30 of the virtual exhibition space image generated based on the (center) reference vanishing point position. When the virtual exhibition space image request is received from the user terminal 200, the user terminal 200 provides a pre-generated still shot 30. In addition, while the still shot 30 is loaded and displayed by the user terminal 200, the server 100 transmits an individual content image to the user terminal 200. The individual content image is for providing a detailed image and reconstructing the virtual exhibition space image according to a change in viewpoint as described below. The user terminal 200 generates a virtual exhibition space image by using the individual content image. When the virtual exhibition space image is completed, the user terminal 200 replaces and provides the still shot 30 with the completed virtual exhibition space image. In this case, a fade in / out method may be utilized.

The user terminal 200 stores the still shot 30 so that the server 100 does not request the still shot 30 thereafter. Meanwhile, when there is a change or update of the content image arranged in the virtual exhibition space, the server 100 may transmit the still shot 30 reflecting the change or update to the user terminal 200 again.

The user terminal 200 receives a zoom-in request for a wall on which the content image in the virtual exhibition space image is disposed, and enlarges the wall portion of the virtual exhibition space image, thereby providing the information provided from the server 100. An individual content image can be used to provide a detailed image of the wall surface that is requested to be zoomed in to. In the case of a zoom out request, substantially the same reduction method may be applied. The user interaction function is not limited to the above example.

This allows for faster loading and streamlined data transfer, since the still shots are created first, instead of the individual content images.

In addition, according to the above-described user personalization result, only the content image preferred by the user or the content image may be transmitted to the user terminal 200 preferentially, thereby enabling fast loading and reducing data usage.

Referring to FIG. 6, the virtual exhibition space generation unit 120 may include a plurality of shadow layers 40 having a different transparency and a predetermined number of illumination layers (not shown) in addition to the wall 10 and the content image 20. Use it to complete the virtual exhibition space image.

The shadow layer 40 may be disposed between the wall surface 10 and the content image 20 or may be disposed above the content image 20. In addition, multiple shadow layers 40 may be disposed. In addition, each shadow layer 40 of the multilayer shadow layer 40 may have a different shape.

The virtual exhibition space generation unit 120 may determine a range of shadow values according to the light intensity and position of the lighting layer, and determine the number or arrangement of the shadow layers according to the range of the shadow values. According to the range of the shadow value, a corresponding number of shadow layers 40 may be arranged in the order of high or low transparency. Based on the virtual three-dimensional coordinates of the perspective view, the shape of the shadow layer and the illumination layer may also be rotated or resized to deform. In addition, the overall shape can also be modified.

7 and 8 are schematic diagrams of exemplary virtual exhibition space images.

Referring to FIG. 7, a virtual exhibition space image generated using a perspective view is illustrated, and the virtual exhibition space includes four wall surfaces 10, and at least one content image 20 is disposed on the wall surface. In particular, it can be seen that the content image disposed on the leftmost wall surface is deformed according to the shape of the wall surface in the perspective view.

Referring to FIG. 8, the virtual exhibition space image includes a place 50 associated with the content image 20, for example, a portion of a place where the corresponding picture was taken when the content is a picture. The virtual exhibition space may be composed of a plurality of walls connected to or separated from the place where the corresponding picture is taken.

9 is a flowchart schematically illustrating a configuration of a method for providing a virtual exhibition space using a 2.5D image according to an exemplary embodiment of the present invention. Descriptions overlapping with those described in connection with the virtual exhibition space system using the 2.5D image according to the exemplary embodiment of the present invention will be omitted with reference to FIGS. 1 to 8.

Referring to FIG. 9, in the method for providing a virtual exhibition space using a 2.5D image according to an embodiment of the present invention, the user terminal 200 receives a virtual exhibition space image request from a user (S310) and the user terminal 200. ) Loading a still shot of the virtual exhibition space image received from the server 100 (S320), and generating, by the user terminal 200, the virtual exhibition space image to the user (S330).

Although not clearly illustrated, as described above, the generating and providing of the virtual exhibition space image by the user terminal 200 includes receiving a content image from the server 100 while loading a still shot of the virtual exhibition space image. The method may further include providing a still shot of the virtual exhibition space image by replacing the still shot with the completed virtual exhibition space image.

Referring to FIG. 10, in operation S330 of generating a virtual exhibition space image, a perspective view having a predetermined viewpoint and a predetermined number of vanishing points with respect to a predetermined virtual exhibition space including a plurality of wall surfaces is generated (S331). Calculating a virtual three-dimensional coordinate of a predetermined position on a plurality of wall surfaces in the perspective view based on the vanishing point of the perspective view (S332), and rotating the predetermined two-dimensional predetermined content image based on the virtual three-dimensional coordinates. Or resizing and disposing on at least one of the plurality of wall surfaces in the perspective view (S333), and completing the virtual exhibition space image using the perspective view in which the content image is disposed (S334).

Although not clearly illustrated, as described above, in the method of providing a virtual exhibition space using a 2.5D image according to an embodiment of the present invention, the user terminal 200 acquires information regarding a change in a viewpoint of a user, and a user. The terminal 200 may further include regenerating a virtual exhibition space image based on the information about the viewpoint change. The regenerating the virtual exhibition space image based on the information about the viewpoint change includes reconstructing the perspective view according to the changed viewpoint with respect to the virtual exhibition space.

Although not clearly illustrated, as described above, the generating of the virtual exhibition space image may further include completing a virtual exhibition space image by using a plurality of shadow layers having a different transparency and a predetermined number of illumination layers. The range of shadow values may be determined according to the intensity and position of light of the illumination layer, and the number or arrangement of the shadow layers may be determined according to the range of the shadow values.

The steps of a method or algorithm described in connection with an embodiment of the present invention may be implemented directly in hardware, in a computer program executed by hardware, or by a combination thereof. Computer programs can include random access memory (RAM), read only memory (ROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), flash memory, hard disk, removable disk, CD-ROM, or It may reside in any form of computer readable recording medium well known in the art.

In the above, embodiments of the present invention have been described with reference to the accompanying drawings, but those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features. I can understand that. Therefore, it should be understood that the embodiments described above are exemplary in all respects and not restrictive.

Claims

A virtual exhibition space generation unit generating a virtual exhibition space image; And

A server including a communication unit configured to receive a virtual exhibition space image request from a user terminal and provide the virtual exhibition space image to the user terminal;

The virtual exhibition space generation unit,

Construct a perspective view having a predetermined viewpoint and a predetermined number of vanishing points with respect to a predetermined virtual exhibition space including a plurality of wall surfaces, and based on the vanishing points of the perspective views, a virtual of a predetermined position on the plurality of wall surfaces in the perspective view Calculate a three-dimensional coordinate of; and rotate or resize a predetermined two-dimensional content image based on the virtual three-dimensional coordinates and place it on at least one of the plurality of wall surfaces in the perspective view, wherein the content image is Using the arranged perspective to complete the virtual exhibition space image,

Virtual exhibition space system using 2.5D image.
The method of claim 1,

The communication unit receives information regarding the change of viewpoint of the user from the user terminal,

The virtual exhibition space generation unit regenerates the virtual exhibition space image based on the information about the viewpoint change,

Regenerating the virtual exhibition space image based on the information about the viewpoint change includes reconstructing the perspective view according to the changed viewpoint with respect to the virtual exhibition space.

Virtual exhibition space system using 2.5D image.
The method of claim 1,

The virtual exhibition space generation unit,

The virtual exhibition space image is further completed by using a plurality of shadow layers having a different transparency and a predetermined number of lighting layers,

Determining a range of shadow values according to the intensity and position of light of the illumination layer, and determining the number or arrangement of the shadow layers according to the range of the shadow values;

Virtual exhibition space system using 2.5D image.
As a method realized by a computer,

Receiving a virtual exhibition space image request from a user; And

Generating and providing a virtual exhibition space image,

Creating and providing the virtual exhibition space image,

Constructing a perspective view having a predetermined viewpoint and a predetermined number of vanishing points with respect to the predetermined virtual exhibition space including a plurality of wall surfaces;

Calculating virtual three-dimensional coordinates of a predetermined position on the plurality of wall surfaces in the perspective view based on the vanishing point of the perspective view;

Rotating or resizing a predetermined content image in two dimensions based on the virtual three-dimensional coordinates and placing it on at least one of the plurality of wall surfaces in the perspective view;

Comprising the step of completing the virtual exhibition space image using the perspective view in which the content image is disposed,

How to provide virtual exhibition space using 2.5D image.
The method of claim 4, wherein

Loading a still shot of the virtual exhibition space image received from the server,

Creating and providing the virtual exhibition space image,

Receiving the content image from the server during loading of the still shot of the virtual exhibition space image;

And providing a still shot of the virtual exhibition space image by replacing it with the completed virtual exhibition space image.

How to provide virtual exhibition space using 2.5D image.
The method of claim 4, wherein

Acquiring information about a change in viewpoint of the user; And

Regenerating the virtual exhibition space image based on the information about the viewpoint change;

Regenerating the virtual exhibition space image based on the information about the viewpoint change,

Reconstructing a perspective view according to a changed viewpoint with respect to the virtual exhibition space,

How to provide virtual exhibition space using 2.5D image.
The method of claim 4, wherein

Generating the virtual exhibition space image,

The virtual exhibition space image is further completed by using a plurality of shadow layers having a different transparency and a predetermined number of lighting layers,

Determining a range of shadow values according to the intensity and position of light of the illumination layer, and determining the number or arrangement of the shadow layers according to the range of the shadow values;

How to provide virtual exhibition space using 2.5D image.
A computer-readable recording medium having recorded thereon a computer program for executing the method for providing a virtual exhibition space using the 2.5-dimensional image of any one of claims 4 to 7.
A computer program, coupled to a computer, stored in a computer readable recording medium for carrying out the method for providing a virtual exhibition space utilizing the 2.5-dimensional image of any one of claims 4 to 7.